Optical positioning element for protecting reflective sticker

Abstract

The utility model discloses an optical positioning element for protecting a reflective sticker, which relates to the technical field of medical instruments and comprises an optical positioning element body, a first mounting groove is arranged on the surface of the optical positioning element body, a second mounting groove is arranged on the inner side of the first mounting groove, and a reflective sticker body is arranged in the second mounting groove. A high-temperature-resistant sealant is arranged in the first mounting groove, and optical glass is adhered to the surface of the high-temperature-resistant sealant; according to the utility model, the optical glass is added on the surface of the reflective sticker body, the optical glass is bonded through the high-temperature-resistant sealant, and the high-temperature-resistant sealant and the reflective sticker body are arranged in the first mounting groove and the second mounting groove, so that the performance of the reflective sticker body is not influenced; and by using the wear resistance of the optical glass and the sealing performance of the high-temperature-resistant sealant, water vapor and dust can be prevented from entering the interior to pollute the reflective sticker, and the reflective sticker cannot be damaged after being cleaned and disinfected at high temperature for many times.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially relates to a kind of optical positioning elements of protection retroreflective. BACKGROUND

[0002] Now, in the field of surgical navigation using optical tracking technology, optical positioning element plays a vital role. Among them, a considerable part of optical positioning element adopts the form of retroreflective. The application of retroreflective in this field was once considered to have many advantages.

[0003] However, in the actual normal use process, some problems have gradually emerged. Due to the high requirements of surgical environment for hygiene and sterility, retroreflective usually needs to be cleaned or disinfected repeatedly after use. However, after such treatment for many times, retroreflective often appears contaminated or damaged, etc. which cannot be recognized by the tracking host. This brings great trouble to the smooth progress of the operation, because once the optical positioning element cannot be accurately recognized by the tracking host, it will affect the accuracy and reliability of surgical navigation, and thus may adversely affect the safety of the patient's operation and treatment effect. Therefore, in view of the above phenomenon, an optical positioning element for protecting retroreflective is proposed to meet the needs of actual use. SUMMARY

[0004] The utility model provides a kind of optical positioning elements of protection retroreflective, solve the technical problem that the retroreflective of optical positioning element can be contaminated or damaged in the process of repeatedly cleaning.

[0005] To solve the above technical problems, the utility model provides an optical positioning element for protecting retroreflective, comprising an optical positioning element body, a first mounting groove is formed on the surface of the optical positioning element body, a second mounting groove is formed on the inner side of the first mounting groove, a retroreflective body is arranged in the second mounting groove, a high-temperature-resistant sealing glue is arranged in the first mounting groove, and an optical glass is bonded to the surface of the high-temperature-resistant sealing glue.

[0006] In some embodiments, the first mounting groove and the second mounting groove are both circular, and the axes of the first mounting groove and the second mounting groove are on the same line, and the diameter of the second mounting groove is smaller than the diameter of the first mounting groove.

[0007] In some embodiments, the high-temperature-resistant sealing glue is in the shape of a circular ring, the outer diameter of the high-temperature-resistant sealing glue is not greater than the diameter of the first mounting groove, and the inner diameter of the high-temperature-resistant sealing glue is greater than the diameter of the second mounting groove.

[0008] In some embodiments, the front surface of the retroreflective body is provided with retroreflective particles, and the retroreflective body is bonded in the second mounting groove by the back adhesive arranged on the back surface.

[0009] In some embodiments, the number of the first installation grooves is several.

[0010] In some embodiments, the high-temperature-resistant sealant has bonding and sealing properties at 150 DEG C or above.

[0011] In some embodiments, the high-temperature-resistant sealant has a bonding strength between the optical glass and the optical positioning element body of no less than 1 MPa in a 150 DEG C environment.

[0012] In some embodiments, the wear resistance of the optical glass ensures that the optical performance does not decrease due to friction during normal installation, disassembly, cleaning, and contact with external objects.

[0013] In some embodiments, the surface scratch depth of the optical glass is no more than 5 microns after a friction test.

[0014] Compared with the related art, the optical positioning element for protecting the reflective sticker has the following beneficial effects:

[0015] The optical positioning element for protecting the reflective sticker increases the optical glass on the surface of the reflective sticker body and bonds the optical glass through the high-temperature-resistant sealant, sets the high-temperature-resistant sealant and the reflective sticker body in the first installation groove and the second installation groove, and thus can prevent water vapor and dust from entering the inside to contaminate the reflective sticker, ensure that the reflective sticker body is not damaged after multiple cleanings and high-temperature disinfections, and avoid the time-consuming and labor-intensive phenomenon caused by frequent replacement of the reflective sticker body. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The figure is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 The figure is a schematic diagram of the cross-sectional structure of the utility model.

[0018] In the figure, 1 is the optical positioning element body, 2 is the first installation groove, 3 is the second installation groove, 4 is the reflective sticker body, 5 is the high-temperature-resistant sealant, and 6 is the optical glass. DETAILED DESCRIPTION

[0019] Embodiment one

[0020] This embodiment provides an optical positioning element for protecting a reflective sticker, which includes an optical positioning element body, a reflective sticker body, a high-temperature-resistant sealant, and an optical glass. Figures 1-2As shown, the utility model of optical positioning element body 1, the surface of optical positioning element body 1 is equipped with first installation groove 2, the inside of first installation groove 2 is equipped with second installation groove 3, is equipped with reflective sticker body 4 in second installation groove 3, is equipped with high temperature resistant sealant 5 in first installation groove 2, and the surface of high temperature resistant sealant 5 is bonded with optical glass 6.

[0021] In the embodiment, by using optical glass 6 to cover the surface of reflective sticker body 4, without affecting the performance of reflective sticker body 4, the wear resistance of optical glass 6 and the sealing property of high temperature resistant sealant 5 can be utilized, so that reflective sticker body 4 can be prevented from being contaminated and worn, thereby avoiding the time-consuming and labor-consuming phenomenon caused by frequent replacement of reflective sticker body 4.

[0022] Example two

[0023] Based on example one, as shown, Figure 2 The first installation groove 2 and the second installation groove 3 of the embodiment are circular, and the axes of the first installation groove 2 and the second installation groove 3 are on the same straight line, and the diameter of the second installation groove 3 is smaller than the diameter of the first installation groove 2.

[0024] In the embodiment, the second installation groove 3 and the first installation groove 2 are coaxial circles, so that reflective sticker body 4 is more easily calibrated and matched with the optical system of the tracking host computer, and meanwhile, the precision control in the machining process of the first installation groove 2 and the second installation groove 3 is facilitated.

[0025] Example three

[0026] Based on example two, as shown, Figure 2 The high temperature resistant sealant 5 of the embodiment is circular, the outer diameter of the high temperature resistant sealant 5 is not greater than the diameter of the first installation groove 2, and the inner diameter of the high temperature resistant sealant 5 is greater than the diameter of the second installation groove 3.

[0027] In the embodiment, the size of the high temperature resistant sealant 5 is limited, so that the outer diameter of the high temperature resistant sealant 5 is prevented from being too large, which causes the warping phenomenon when the high temperature resistant sealant 5 is assembled in the first installation groove 2, and the sealing property of the optical glass 6 is affected; and the inner diameter of the high temperature resistant sealant 5 is prevented from being too small, which affects the reflective effect of the reflective sticker body 4.

[0028] Example four

[0029] Based on example three, the front surface of the reflective sticker body 4 is provided with reflective particles, and the reflective sticker body 4 is bonded in the second installation groove 3 through the back adhesive arranged on the back surface.

[0030] In the embodiment, the reflective particles are some small particulate substances, and these particles usually have special optical properties and can reflect the incident light back, and are generally composed of high refractive index glass beads or micro-prism structures.

[0031] Example Five

[0032] On the basis of Example Four, as shown in the figure, the number of first mounting slots 2 in this embodiment is several. Figure 1

[0033] In this embodiment, the position and number of first mounting slots 2 are determined by the position required to be set by second mounting slots 3, and are generally located at the main direction and key parts of optical positioning element body 1.

[0034] Example Six

[0035] On the basis of Example One, the high-temperature-resistant sealant 5 in this embodiment has the ability to maintain adhesion and sealing performance at 150°C or above. The adhesion strength between high-temperature-resistant sealant 5, optical glass 6 and optical positioning element body 1 is not less than 1 MPa in a 150°C environment.

[0036] In this embodiment, the commonly used high-temperature disinfection method, such as steam sterilization, can reach a temperature of about 121-134°C. If the temperature resistance of the reflective sticker body 4 is insufficient, it will be damaged in this disinfection process. In actual application, in order to cope with possible temperature fluctuations or minor differences in sterilization equipment, it is best to ensure that the high-temperature-resistant performance indicators of high-temperature-resistant sealant 5 have a certain safety margin. High-temperature-resistant sealant 5 is preferably able to withstand a high temperature of 150°C or above, which can more reliably ensure that its adhesion performance is maintained in the conventional operation of steam sterilization and some possible extreme cases, preventing the optical glass 6 from separating from the first mounting slot 2, thereby effectively protecting the reflective sticker body 4. This strength can ensure that high-temperature-resistant sealant 5 can firmly bond optical glass 6 to optical positioning element body 1, preventing separation due to factors such as temperature changes and mechanical vibrations. The material of high-temperature-resistant sealant 5 that meets the above requirements can be Dymax 1040-M adhesive, silicone sealant, etc.

[0037] Example Seven

[0038] On the basis of Example One, the wear resistance of optical glass 6 in this embodiment can ensure that it will not cause a decrease in optical performance due to friction during normal installation, disassembly, cleaning, and contact with external objects. After the friction test, the surface scratch depth of optical glass 6 is not more than 5 microns.

[0039] ​In this embodiment, the optical glass 6 surface scratch depth is not more than 5 microns after the friction test according to the friction test method stipulated in the industry standard (such as ISO 9287 standard) using a 9H hardness silicon carbide abrasive under the condition of 10N pressure friction for 1000 times, and the surface roughness change rate is not more than 10% after friction under the conventional use condition, wherein the surface roughness measurement method is carried out according to the GB / T 3505-2009 standard.

[0040] Working principle: by increasing the optical glass 6 on the surface of the reflective sticker body 4, and bonding the optical glass 6 through the high-temperature-resistant sealing glue 5, and setting the high-temperature-resistant sealing glue 5 and the reflective sticker body 4 in the first installation groove 2 and the second installation groove 3, the wear resistance of the optical glass 6 and the sealing property of the high-temperature-resistant sealing glue 5 can be utilized without affecting the performance of the reflective sticker body 4, so that the reflective sticker body 4 can be prevented from being contaminated and worn, thereby avoiding the time-consuming and laborious phenomenon caused by frequent replacement of the reflective sticker body 4, and by setting the high-temperature-resistant sealing glue 5, the optical positioning element body 1 can also maintain the bonding property and sealing property after high-temperature sterilization.

Claims

1. A protective optical positioning element for a retroreflective sheeting, comprising an optical positioning element body, characterized by: The surface of the optical positioning element body is provided with a first mounting groove, the inner side of the first mounting groove is provided with a second mounting groove, the second mounting groove is provided with a reflective sticker body, the first mounting groove is provided with high-temperature-resistant sealing glue, and the surface of the high-temperature-resistant sealing glue is bonded with optical glass.

2. An optical positioning element for protecting a retroreflective sheeting according to claim 1, wherein, The first mounting groove and the second mounting groove are circular, and the axes of the first mounting groove and the second mounting groove are on the same line, and the diameter of the second mounting groove is smaller than that of the first mounting groove.

3. The optical positioning element of claim 1, wherein, The high-temperature-resistant sealing glue is in the shape of a circular ring, the outer diameter of the high-temperature-resistant sealing glue is not greater than the diameter of the first mounting groove, and the inner diameter of the high-temperature-resistant sealing glue is greater than the diameter of the second mounting groove.

4. The optical positioning element of claim 1, wherein, The front surface of the reflective sticker body is provided with reflective particles, and the reflective sticker body is bonded in the second mounting groove through the back adhesive provided on the back surface.

5. The optical positioning element of claim 1, wherein, The number of the first mounting grooves is several.

6. An optical positioning element for protecting a retroreflective sheeting according to claim 1, wherein, The high-temperature-resistant sealing glue has adhesive and sealing properties above 150 DEG C.

7. An optical positioning element for protecting a retroreflective sheeting according to claim 6, wherein, The adhesive strength between the high-temperature-resistant sealing glue, the optical glass and the optical positioning element body is not less than 1 MPa in the environment of 150 DEG C.

8. An optical positioning element for protecting a retroreflective sheeting according to claim 1, wherein, The wear resistance of the optical glass can ensure that the optical performance will not decrease due to friction during normal installation, disassembly, cleaning and contact with external objects.

9. An optical positioning element for protecting a retroreflective sheeting according to claim 8, wherein, The surface scratch depth of the optical glass after the friction test is not more than 5 microns.

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